They are great equalizers Armbars (Arm Locks). It is hard to say how anyone would react in an altercation or even better anticipate how one would be attacked. If available an armbar would get anyone to submit, depending on the situation and if I feared for my life then I would see how far his arm would bend in the opposite direction. Most likely, it would be useless in a multiple attack. If strictly one on one, I would work to get a choke in there.

Does anyone ever "win" in a fight? I suppose victory is in the eye of the beholder.